Fur stretching and nailing device



' 1 2 May 9 7 s. FRIEDMAN FUR STRETCHING,AND NAI-LING DEVICE 2Sheets-She't 1 Filed March 5; 1926 INVLNTOR Samug'lfiiedm 71.

ATTORNEYS 152s 588 May 10,1927. 3 FRIEDMAN FUR STRETCHING AND NAILINGDEVICE Filed March 5, 1926 2 Sheets-Sheet 2 Zz'q. f.

. 'INVENTOR ,S'mnuelfh'edman ATTORNEYS Patented May 10,1927.

' UNITED STATES SAMUEL FRIEDMAN, or BROOKLYN, NEW YORK.

EUR STRETOHING AND NAIL ING DEVICE.

Application filed March 5, 1926. 'Serial No. 92,499.

' I invention relates to the stretchingand nailing of furs to be usedfor the making of coats and other pieces of fur. The usual fur or skinis stretched manually after being gripped by a. pliers. In practice,an'outline of the coat pattern or other garment is usually chalked on atable or board and the fur is stretched to correspond with the coatpattern and then nailedJ The general object of my inve ition is toprovide a novel portable device for, effect-v ing the stretching of thefur.and effecting the nailing of. thesame conforming to the outline ofthe pattern.

A further object of the invention is to provide a device for theindicated purpose which may be embodiedin a form to be semi-automatic.

The natureof my invention and its distinguishing features and advantageswill clearly appear as the description proceeds.

Reference is to be had tothe accompanying drawings forming a part ofthis speciffi'cation, it being understood that the drawon the line 6-6,Figure 5; Figure'7 is a view similar to ings are merely illustrative ofone example of the invention. I

Figure 1 is a vertical section of a fur stretching andnailing deviceembodying my invention; i

Figure 2 is a plan view of myiimproved' device with the handled' top orcover removed; p a

Figure ,3' is a viewsimilar to Figure 1 with the parts in the positionsto which. they move w en the fur has been stretched and isready fornailing;

Figure. 4 is a plan viewof the stretched fur. piece and indicatingby'dotted lines the outline ofa pattern determining the" Figure 5 is adetailin front elevation of the holding element for individual nails tobe employed as fasteners;

stretched form of the fur;

Figure 6 isan enlarged horizontal section 2 Figure; 5 but illustrating aslight modification in the element for holdingfur fastening meansof adifferent form; g

Figure 8 is a horizontal section on the line 8-78, Figure 7'. t

ance' with the illustrated'example a base 10 functioning to bringaboutthe closing of an electric circuitcontaining a magnet for completing thefur gripping action as will appear.

On the. auxiliary lever. 18 at the opposite side from pivot 19 from thenose 21 'is a. circuit closing head 23 of insulatin material adapted toengage the lower en or head of a contact pin 24 adapted to engage aterminal contact 25 from which conductor 26 leads. A second terminal 27ison a conductor 126 and said terminal 27 is in electrical connectionwith pin 24. The conductors 26 and 126 are in circuit with anelectromagnet 28. An end 29 of a rocka-ble element 30 forms an armaturefor magnet 28.

device engageable with the rear end 33 of clamp jaw 15. I

Ahammer head 34is carried by side arms 35 secured at their lower ends toa trans-- verse shaft 36 having a crank handle 37 or other means to rocksaid shaft. A circuit; breaker is provided, here shown in the form of anarm 38 deflected laterally into the path of movement of one of the arms35, said arm coacting with said one of the arms 35 of the hammer toconstitute the circuit so Said lever is pivoted at 31 between the stand-'ards 17 and carries a screw 32 or equivalent breakeryso that thecircuit will be broken automatically as hereinafter explained.

The hammer head 34 is adapted to be en gaged by ailatch 39 pivoted tocover 11 as at 40 and-having a handle 41, the depression of which handlelifts said latch 39, said lateral pin-43Laga-inst which the thumb of Ithe operators hand. may. be pressed to die press said element-30.1 Incarrying out myinvention in accord- A spring 44 is connectedwith-shaft36 of the hammer head 34 andthe opposite end? of said spring isw securedto a fixed part such as a pin rigid with standards 17. The element 30 ispressed against by, a spring .46 to limit its movements away from magnet28., A coil spring 47 is provided 0 l tact pin 24 tending to'depressthesame to A the gri ping a position with thee'ectriccirc'uit open. spring48 is provided beneath that arm of auxiliary lever 18 opposite that armhaving the nose 21 for a purpose that will appear from a description ofthe mode of use and operation of my device as hereinafter given.

A holder for nails B or equivalent fasteners is provided. Said holderincludes a spring 49 fastened to cover 11 and carrying a yoke best shownin Figures 5 and 6. The yoke 50 has split'resilient ends 51 between eachof which split ends a nail B is accommciplated so that a pair of nailsis held in the o e. y In Figures 7 and 8 is illustrated a modified yoke150 the resiIient side arms of which have concavities 151 at theinterior thereof adapted to receive the ends of a fastener b of sheetmaterial .formed with a pair of prongs c separated to engage and holdthe fur at two points and therefore the equivalent of two nails. Theletter 0. indicates in dotted lines the outline of a pattern as is drawnin ractice on a/ table or board to which the ur A is to be secured. I

The nails B pass through slots 52 in the I gripping jaw part 15 andthrough registering slots 53 in base 10. so that the stretching andnailing device may he bodily drawn away from the nailing means when thelatter has been driven. The nailing device I) obviously is adapted alsoto pass through slots 52 and 53 when said device I) is employed.

The gripping jaw 15 and the circuit controlling lever 18 auxiliarythereto have yieldingness imparted thereto, the means'for the purposebeing as follows:

. Coil springs 54 are fastened at one end of each to the gripping jaw 15as at and at the opposite end each spring is fastened to a standard 17,the tendency of the springs being to exert a slight downward pressure onthe jaw so that it may yield vertically and at the same time be normallyheld to'its proper position. Also, coiled springs 56 are attachedat oneend as at 57 to the ping jaw 15 springs are continuous I pass across thelever 18 as at 58,-

with each other and l in the slot 20 and thus in the plane ofth the furpositioned jaw15. v w I The stretching and nailing device as describedis used and manipulated as follows:

thereby serving to normally maintain the lever 18.

messes element 30 topai'tially depress the element 30 so that thearmature head 29 is approximately in the dotted :line. positionindicated in Figure 1; The gripping jaw 15 and lever 18 are at this timenotcompletely moved to osition biitf-are respectivel above t e'notc es13-andrecess'22. A pa 1 on the handle 12 will cause the device to moverelatively 'to the fur piece A, the jaw 15 and lever 18 sliding overthe'surface of the fur. Finally, when the nose 21 .of lever 18 passesfrom'theedge of the fur A, the spring48 which previously was-stressed bythe downward movement of jaw 15 and lever 18 will Q manner to throw thenose 21 downwardly exert its pressure to rock the lever 18 in a into therecess 22. The final downward movement of the nose 21' will cause theblock. 23 at the opposite end of. lever 18' to so engage the pin 24 asto move'said pin into engagement into contact with the terminal 25thereby closing the circuit through the conductors 26, .126 andenergizing" the magnet. 28. The energizing-of the magnet 28 will -causethe armature head 29 of element 30 to be attracted' and this will rocksaid element. 3.0 on its pivot 31' in amanner to cause the screw32 to enage the end 33 of jaw 15 and causefthe teetl m 14'of said jaw to tightlygrip the fur A. With the fur A thus tightly gripped a pull may beexerted on the handle 12, suficient to stretch the fur A to the outlinea of the pattern at the grilpped portion of the fur.

he fastener nails B or the fastener I) having been inserted in the yoke50 (or 150), the hammer'34 is released from the latch 39 by depressingthe handle arm 41 on said latch. The spring 44- acting on the hammerarms 35 which previously has been stresed by the rocking of theshafts 36through the medium of the crank arm 37 will cause the upper surface 59of yoke 50 and exert a camming action on said yoke to cause the yoke tomove outwardly away from the plane of the nails B which at this timewill have passed through the slots 52, 53 and driven fpthrough the fur Aand .artially into the and the opposite end oi t he. P

table. With the downward movement of the arms 35 of the hammer, one ofsaid arms will engage the arm 38 of the circuit breaker. This arm 38,it. is to be observed, is at the opposite end of fulcrum 19 from thenose 21. .Henee, as'the hammer drives the fasteners home, the lever 18will be so rocked as to cause the block 23 to move away from beneath thecontact pin 24 and thus the spring 47 will cause said pin 24 to move outof engagement with contact 25, thereby automaticall breaking the circuitand deenergizing t e magnet 28. As the magnet masses is de-energizedtheaw will be raised lag the spring 48 and t us the element '30 wi berocked and the armature 29 will be raised from the magnet. The hammer isrestored I claim:

1. In a device tor stretching and nailing *furs, fur gripping means, anelectromagnetic responsive device,and means to control the circuit ofsaid electromagnetic responsive device through the medium of thefurgnpplng means.

2. In a flu-stretching and nailing device, a fur gri ping jaw, anelectromagnetic responsive evice, an element carried b the gripping jaw,means to close throng the ru n of said element 'a circuit includin saidelectromagnetic responsive device, an

means subject to said electromagnetic re sponsive device to cause saidgripping jaw to exert its gripping action.

3. A fur-stretching and nailing device adapted to receive an edgeportion of a piece of furand portable to be moved relatively to said furat an edge thereof, a gripping jaw, manuallymovable means adapted .toposition said jaw adjacent to the fur, an electromagnetic responsivedevice which when energized is adapted to influence said manuallymovable means to cause the jaw to effect a gripping action on the furfor stretching the latter by movement of said de-, vice, and meanscarried by the jaw and adapted to close a circuit with said eectromagnetic responsive device when said last-mentioned means movesfrom the edge of the fur.

4. A device for stretching and. nailin furs and portable to be manuallymoved for stretching thefur, a gripping jaw, a lever carried by saidjaw, a'clrcuit control- -ling device subject to movement of said lever,an electromagnetic responsive device adapted to be energized by theclosin of the circuit by saidclrcuit controller, an an elementconstituting an armature and manu: ally movable to engage said jaw forpositioning the same adjacent-the gri ping position, said leverbeing-movable with the jaw and movable independently of the jaw forcontrolling. the circuit controller and said element being adapted to besubjected to the' influence of said electromagnetic responsive devicewhen energized'to move thev 'aw to the i in osition.

J 5. A dev ii ie ior, stretching and nailing furs and portable to bemanually moved for stretching the fur, a gripping jaw, a lever carriedby said jaw, a circuit controlling device subject to movement of saidlever, an electromagnetic res onsive device adapted to be energized by te closing of the circuit by said circuit controller, an elementconstituting an armature, and manually movable to engage said jaw forpositioning the same adjacent the gripping position, said lever beingmovable with the jaw and movable independently of the jaw forcontrolling the circuit controller, and said element being adapted to besubjected, to the influence of said electromagnetic responsive deviceand when energized to move the jaw to the gripping position, a hammer,and a nail-holding device adapted to receive nails in-position tobestruck by said hammer.

. 6. A portable stretching and nailing device, including gri ping meansfor the material to be stretc ed, an element operable to bring saidgripping means close to a gripping dposition, means to automaticallycause sai gripping means toexert gripping action, and a handledstructure manually movable and carrying said first-mentioned means andsaid second-mentioned means, as well as said element.

7. A portable stretching and nailing device, including gripping meansfor the material to be stretched, an element operable to bringsaidgripping means close to a gripping position, means to automatically- 8.Arportable stretching and nailing device, including gripping means forthe material to be stretched, an element operable to bring said grippingmeans close to a gripposition, means to automatically cause grippingmeans to *exert gripping action; together with a hammer adapted fordriving a fastener into the material when stretched, and resilient meansadapted to hold a fastener for the material and subject to engagement bysaid hammer for releasinIg' said fastener.- 9. n a stretching andnailing device, a base, a gripping jaw having slots through which furfastening means may be passed,

means to hold is. fur fastener device, a

hammer ada ted' to drive a fastener held by said. holding means, anelectromagnetic responsive means adapted to actuate said jaw to agrippinglposition, and means asv sociatedwith said jaw and adapted tobring said electromagnetic responsive means into action. 1

10. Ina device for stretching and nailing jacent the base to be out ofgripping relai eeauss tion with the base, a spring beneath said 10 leverand adapted to be stressed by the depression of the jaw, and anelectromagnetic responsive device subject to the movements of said leverand adapted to bring the-jaw into gripping position.

SAMUEL FRIEDMAN.

